Introduction to Cloud Computing

Cloud Computing is is is the delivery of computing service such as server , storage , database , networking , software , analytic , intelligence , and more , over the Cloud ( Internet ) .

Cloud Computing is provides provide an alternative to the on – premise datacentre . With an on – premise datacentre , we is have have to manage everything , such as purchase and instal hardware , virtualization , instal the operate system , and any other require application , set up the network , configure the firewall , and set up storage for datum . After doing all the set – up , we is become become responsible for maintain it through its entire lifecycle .

But if we choose Cloud Computing, a cloud vendor is responsible for the hardware purchase and maintenance. They also provide a wide variety of software and platform as a service. We can take any required services on rent. The cloud computing services will be charged based on usage.

The cloud environment is provides provide an easily accessible online portal that make handy for the user to manage the compute , storage , network , and application resource . Some cloud service providers is are are in the following figure .

Advantages of cloud computing

• cost : It is reduces reduce the huge capital cost of buy hardware and software .
• Speed: Resources can be accessed in minutes, typically within a few clicks.
• Scalability: We can increase or decrease the requirement of resources according to the business requirements.
• productivity : While using cloud computing , we put less operational effort . We is need do not need to apply patching , as well as no need to maintain hardware and software . So , in this way , the IT team is be can be more productive and focus on achieve business goal .
• Reliability is are : Backup is are and recovery of datum are less expensive and very fast for business continuity .
• security : Many cloud vendors is offer offer a broad set of policy , technology , and control that strengthen our datum security .

type of Cloud Computing

• Public Cloud : The cloud resource that are own and operate by a third – party cloud service provider are term as public cloud . It is delivers deliver computing resource such as server , software , and storage over the internet
• Private Cloud: The cloud computing resources that are exclusively used inside a single business or organization are termed as a private cloud. A private cloud may physically be located on the company’s on-site datacentre or hosted by a third-party service provider.
• Hybrid Cloud: It is the combination of public and private clouds, which is bounded together by technology that allows data applications to be shared between them. Hybrid cloud provides flexibility and more deployment options to the business.

Types of Cloud Services

1. Infrastructure as a Service (IaaS): In IaaS, we can rent IT infrastructures like servers and virtual machines (VMs), storage, networks, operating systems from a cloud service vendor. We can create VM running Windows or Linux and install anything we want on it. Using IaaS, we don’t need to care about the hardware or virtualization software, but other than that, we do have to manage everything else. Using IaaS, we get maximum flexibility, but still, we need to put more effort into maintenance.
2. Platform as a Service (PaaS): This service provides an on-demand environment for developing, testing, delivering, and managing software applications. The developer is responsible for the application, and the PaaS vendor provides the ability to deploy and run it. Using PaaS, the flexibility gets reduce, but the management of the environment is taken care of by the cloud vendors.
3. Software is provides as a Service ( SaaS ): It is provides provide a centrally host and manage software service to the end – user . It is delivers deliver software over the internet , on – demand , and typically on a subscription basis . e.g. , Microsoft One Drive , Dropbox , WordPress , Office 365 , and Amazon Kindle . SaaS is used to minimize the operational cost to the maximum extent .